Privacy Policy

1. Controller

The controller for personal data processed by BlitzDeutsch is:

Nazmi Shafin
Friedrich-Ebert-Str. 4
93051 Regensburg
Germany
Email: support@blitzdeutsch.com

This policy covers the marketing website (blitzdeutsch.com), the web app at app.blitzdeutsch.com, and the BlitzDeutsch apps on the Apple App Store and Google Play.

2. Information we collect

• Account information: email address and name when you create an account.
• Learning data: progress, words-per-minute setting, saved words, and the languages you use (English, Turkish, Arabic, or Ukrainian).
• Web payments: card payments on the website are processed by Stripe. We do not store your card number on our servers.
• App Store and Google Play purchases: if you buy Premium in the iOS or Android app, Apple or Google processes the payment. We use RevenueCat to check whether a monthly, yearly, or lifetime plan is active.
• Website analytics: Google Analytics on this marketing site, and only after you opt in. See section 4.

3. How we use data, and the legal basis

• Providing the account, vocabulary, saved words, and Premium access (including syncing them across the website and the mobile apps): Art. 6 (1) (b) GDPR, because this is necessary to perform the contract.
• Taking payment for a monthly, yearly, or lifetime plan, on the web via Stripe or in the apps via Apple, Google, and RevenueCat: Art. 6 (1) (b) GDPR, because the payment is necessary to provide the paid plan.
• Service emails about your account, and newsletters only if you opt in: Art. 6 (1) (b) GDPR for messages needed to provide the service, and Art. 6 (1) (a) GDPR (consent) for optional newsletters. You can withdraw newsletter consent by using the unsubscribe link or emailing us.
• Google Analytics on this website: Art. 6 (1) (a) GDPR (consent). The analytics script does not load until you choose “Allow analytics”. If you decline, it is not loaded.

4. Google Analytics

This marketing site can load Google Analytics (measurement ID G-NJTGKCC1GS). It loads only after you allow it in the banner. Your choice is stored in this browser (local storage key bd-ga-consent). Declining does not block the site or the learning app.

To withdraw that consent later, clear this site’s stored data in your browser. The banner will show again, and you can decline. You can also email support@blitzdeutsch.com. Analytics cookies that were already set are removed when you clear the site’s cookies.

5. Services we use

• Firebase (Google): authentication and the database for accounts, progress, and saved words, on the web app and the mobile apps.
• Stripe: card payments for Premium bought on the website.
• Apple App Store and Google Play: purchases of Premium inside the iOS and Android apps. Apple and Google process those payments under their own terms.
• RevenueCat: checks which Premium plan (monthly, yearly, or lifetime) is active for app purchases.
• Google Analytics: website usage statistics, only after consent, as described above.
• Vercel: hosting for this marketing website.

6. Your rights

If the GDPR applies to you, you can ask for access, correction, erasure, or restriction of your data, and for a copy of the data you provided to us. Where we rely on consent, you can withdraw it at any time. Withdrawal does not affect processing that happened before you withdrew.

You can export or delete your account from the app (Profile → Privacy & Data) or from the website dashboard after you sign in. You can also email support@blitzdeutsch.com. Some payment records may be kept where the law requires it; see the account-deletion page.

You can lodge a complaint with a supervisory authority. For a private controller established in Bavaria, that authority is the Bayerisches Landesamt für Datenschutzaufsicht (BayLDA).

7. Contact

Questions about this policy: support@blitzdeutsch.com, or by post to the address in section 1.